feat:Support for term aggs order

aggregations_test.go

@@ -92,5 +92,33 @@ func TestAggregations(t *testing.T) {
 				},
 			},
 		},
+		{
+			"order for termsAggs",
+			//eq.Aggregate(eq.TermsAgg("a1", "FIELD1").Size(0).Aggs(eq.Sum("a2", "FIELD2.SUBFIELD")))
+			Aggregate(
+				TermsAgg("categories", "categories").
+					Order(map[string]string{"priceSum": "desc"}).
+					Size(5).Aggs(Sum("priceSum", "price"))),
+			map[string]interface{}{
+				"aggs": map[string]interface{}{
+					"categories": map[string]interface{}{
+						"terms": map[string]interface{}{
+							"field": "categories",
+							"order": map[string]interface{}{
+								"priceSum": "desc",
+							},
+							"size": 5,
+						},
+						"aggs": map[string]interface{}{
+							"priceSum": map[string]interface{}{
+								"sum": map[string]interface{}{
+									"field": "price",
+								},
+							},
+						},
+					},
+				},
+			},
+		},
 	})
 }

aggs_bucket.go

@@ -12,6 +12,7 @@ type TermsAggregation struct {
 	shardSize   *float64
 	showTermDoc *bool
 	aggs        []Aggregation
+	order       map[string]string
 }
 
 // TermsAgg creates a new aggregation of type "terms". The method name includes
@@ -54,6 +55,12 @@ func (agg *TermsAggregation) Aggs(aggs ...Aggregation) *TermsAggregation {
 	return agg
 }
 
+// Order sets the sort for terms agg
+func (agg *TermsAggregation) Order(order map[string]string) *TermsAggregation {
+	agg.order = order
+	return agg
+}
+
 // Map returns a map representation of the aggregation, thus implementing the
 // Mappable interface.
 func (agg *TermsAggregation) Map() map[string]interface{} {
@@ -70,6 +77,9 @@ func (agg *TermsAggregation) Map() map[string]interface{} {
 	if agg.showTermDoc != nil {
 		innerMap["show_term_doc_count_error"] = *agg.showTermDoc
 	}
+	if agg.order != nil {
+		innerMap["order"] = agg.order
+	}
 
 	outerMap := map[string]interface{}{
 		"terms": innerMap,